16, first you need to add on the four he lost to the 18 he ended with.
Answer:
because this is a right triangle, we have''

Step-by-step explanatio
Answer:
-2
Step-by-step explanation:
Answer:
EFK and IKH are vertical angles
Step-by-step explanation:
Vertical angles touch at a point and have the same lines, just extended
EFK and IKH are vertical angles
FKG and IKJ are vertical angles
GKH and EKJ are vertical angles